Chemistry High School

A balloon has a volume of 6.7L at 20 celsius. What will its volume be at 350 celsius if it is at constant pressure?

Answers

Answer 1

Solution :

Volume of balloon [tex] \sf (V_1 ) [/tex] = 6.7 L

Temperature [tex] \sf (T_1 ) [/tex]= 20 celsius (converting into kelvin) = 20 + 273 = 293 K

Now,

[tex] \sf (T_2 ) [/tex] = 350 celsius

= 350 + 273 = 623 K

Since pressure is constant.

According to Charles law, At constant pressure the volume of the gas is directly proportional to temperature.

[tex] \: \: { \boxed{ \sf{ \pink{\dfrac{V_1}{V_2} = \dfrac{T_1}{T_2}}}}}[/tex]

We have to find [tex] \sf (V_2 ) [/tex]

On putting the values in above formula,,

[tex]\sf \dfrac{6.7}{V_2} = \dfrac{293}{623} \\ \\ \sf V_2 = \dfrac{6.7 \times 623}{293} \\ \\ \sf V_2 = \dfrac{4174.1}{293} \\ \\ \sf V_2 = 14.24[/tex]

Therefore, Volume of the balloon will be 14.24 L at 350 celsius.

Related Questions

what mass of nitric acid, in grams, can be made from 481 g of ammonia? express your answer with the appropriate units.

Answers

481 grams of ammonia can produce 1.78 kg of nitric acid.

The equation for this reaction is NH₃ + HNO₃ → NH₄NO₃ we see that 1 mole of NH₃ reacts with 1 mole of HNO₃.

Molar mass of NH₃ = 17.03 g/mol

Molar mass of HNO₃ = 63.01 g/mol

So, 1 mole of NH₃ reacts with 1 mole of HNO₃. Thus, number of moles of NH3 present = number of moles of HNO₃ produced

We need to find the mass of HNO₃ produced which is given by:

m = n x M

where m is the mass, n is the number of moles and M is the molar mass of the substance.

So,

n = mass/molar mass

Number of moles of HNO₃ produced = Number of moles of NH3 reacted

Moles of NH₃ reacted = 481 g / 17.03 g/mol

Moles of NH₃ reacted = 28.22 mol

So, moles of HNO₃ produced = 28.22 mol

Hence, the mass of nitric acid, in grams, can be made from 481 g of ammonia is 28.22 × 63.01 g = 1779 g ≈ 1.78 kg.

Thus, the mass of nitric acid that can be produced from 481 g of ammonia is 1.78 kg.

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methane gas and oxygen gas react to form water vapor and carbon dioxide gas. what volume of carbon dioxide would be produced by this reaction if of methane were consumed?

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The volume of carbon dioxide that would be produced by this reaction if methane were consumed is: [tex]CH4 + 2O2 → CO2 + 2H2O[/tex]

When methane gas and oxygen gas react, they produce water vapor and carbon dioxide gas. The volume of carbon dioxide produced by this reaction depends on the amount of methane gas that is consumed.

If 100 mL of methane gas were consumed, then the volume of carbon dioxide produced would be 44 mL. This reaction can be expressed in the following equation:
[tex]CH4 + 2O2 → CO2 + 2H2O[/tex]

The mole ratio of methane gas to carbon dioxide gas produced by this reaction is 1:1. This means that if 100 mL of methane gas is consumed, then 44 mL of carbon dioxide gas will be produced. This is because 44 mL of carbon dioxide is equivalent to 1 mole of carbon dioxide gas, and 100 mL of methane gas is equivalent to 1 mole of methane gas.

Therefore, if 100 mL of methane gas is consumed in this reaction, then 44 mL of carbon dioxide gas will be produced. This can be determined by using the mole ratio of methane gas to carbon dioxide gas, which is 1:1.

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What do these two changes have in common?
boiling sugar to make caramel
using a large magnet to remove pieces of iron from a junkyard

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Boiling sugar to make caramel and using a large magnet to remove pieces of iron from a junkyard are two very different processes, but they have one thing in common: they both involve a physical change.

A physical change is a change in a substance that does not result in the formation of a new substance with different chemical properties. In other words, the substance does not undergo a chemical reaction, but rather a change in its physical properties.

Boiling sugar to make caramel is a physical change because the sugar undergoes a change in its physical properties, such as color, texture, and taste, without undergoing a chemical reaction. The sugar molecules are heated to the point where they break down and re-form into a new substance with new properties, but the chemical composition of the sugar remains the same.

Using a large magnet to remove pieces of iron from a junkyard is also a physical change because the magnet is not altering the chemical properties of the iron, but only its physical location. The magnet is attracting and removing the iron from the junkyard, but the iron itself is not undergoing a chemical reaction.

In both cases, the substances are undergoing a physical change, but their chemical properties remain unchanged.

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what are the physical processes by which atoms rearrange during phase transformations in the solid state

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Diffusion, nucleation, and crystal growth are the physical processes by which atoms rearrange during phase transformations in the solid state.

Phase transformations in the solid state refer to a type of reaction that happens to the solid state of matter, which results in different properties of the substance.

It is important to note that the process of phase transformation happens through different physical processes that include evaporation, melting, sublimation, and condensation, among others.

During phase transformation in the solid state, atoms undergo a rearrangement process that changes the physical properties of the solid into a different phase. This process usually happens in a few ways, such as:

- Diffusion: This is the movement of atoms from one place to another due to the application of heat or pressure, which allows the atoms to shift positions within the solid. The diffusion process enables the atoms to break and form new bonds, resulting in phase transformation.
- Nucleation: This is a process that happens when the solid phase undergoes a change, which causes the formation of new atoms or molecules. This process typically occurs in areas where there is a higher concentration of atoms, and it takes place due to the application of heat or pressure.
- Crystal Growth: This is a process that happens when the atoms of a solid phase come together to form a new crystal structure. The crystal structure has a different arrangement of atoms, which results in different physical properties.

These processes change the physical properties of the solid into a different phase, resulting in different properties.

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which of the compounds ofh2c2o4,ca(oh)2,koh, and hi, behave as acids when they aredissolved in water?

Answers

Answer: The compound H2C2O4 behaves as an acid when dissolved in water.

What are acids?

Acids are chemical compounds that donate protons, hydrogen ions, or accept electrons or lone pairs in chemical reactions. Acids increase the concentration of hydrogen ions (H+) in a solution.

Arrhenius acid: Arrhenius acid is any substance that provides an excess of H+ (hydronium ions) when dissolved in water, increasing the concentration of H+ ions in the solution.

What are bases?

Bases, like acids, are substances that contain elements or molecules that can interact with ions or protons in water. In water, bases, in general, decrease the concentration of hydrogen ions and increase the concentration of hydroxide ions. Base solutions may be defined as those with a pH greater than 7.

What is a solution?

A solution is a homogeneous mixture of two or more substances that is uniform throughout.

What is dissolution?

Dissolution is the process of dissolving a solute in a solvent to form a solution. Solutes: Solutes are the substances that are dissolved in a solvent to create a solution. Solvents: Solvents are the substances in which solutes dissolve to create a solution.

Which of the given compounds behave as acids when they are dissolved in water?

The following are the given compounds: Ca(OH)2KOHHIH2C2O4 Of all the given compounds, the compound H2C2O4 behaves as an acid when it is dissolved in water.

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hat role does water play in the reaction with t-BuCl? Choose all that apply. Multiple answers: You can select more than one opt ion A. nucleophile B. solvent C. acid . base

Answers

Water plays the role of a solvent and nucleophile in the reaction with t-BuCl.

This is a substitution reaction where water is used as a solvent and a nucleophile.

What is a nucleophile?

A nucleophile is a chemical species that donates an electron pair to an electron-deficient species. In organic chemistry, nucleophiles are a class of reagents crucial in organic synthesis.

Nucleophiles are atoms or molecules that have lone pairs of electrons and are attracted to positively charged ions or atoms. They are an important class of reactants in many organic reactions, such as substitution, addition, and elimination reactions.

What is a solvent?

A solvent is a liquid that dissolves another substance, a solute, to form a homogeneous solution. Solvents can dilute, dissolve, or extract substances in various industrial and laboratory applications.

Water, ethanol, acetone, and ether are examples of common solvents.

role does water play in the reaction with t-BuCl?

Water plays the role of a solvent and nucleophile in the reaction with t-BuCl. This is a substitution reaction where water is used as a solvent and a nucleophile. Hence, the correct options are B. solvent.

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given the glucose level i control mean of 100 mg/dl and the standard deviation is 4 mg/dl, what is the coefficient of variation?

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The coefficient of variation is 4%.

Coefficient of variation is the ratio of standard deviation to the mean, expressed as a percentage. It is used to compare the variability of data sets with different means. The formula for calculating the coefficient of variation is:

Coefficient of variation = (standard deviation / mean) x 100

Given the glucose level control mean of 100 mg/dl and the standard deviation is 4 mg/dl, the coefficient of variation can be calculated as follows:

Coefficient of variation = (standard deviation / mean) x 100

Coefficient of variation = (4 / 100) x 100

Coefficient of variation = 4%

Therefore, the coefficient of variation is 4%.

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This is done by the (8) _____, where it is assumed the topmost layer is the youngest and the bottom-most layer is the oldest

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This is done by the process of stratigraphy, where it is assumed that the topmost layer is the youngest and the bottom-most layer is the oldest.

Stratigraphy is a branch of geology that deals with the study of rock layers (strata) and their relative positions in order to determine the geologic history and the sequence of events that led to their formation. By analyzing the characteristics of the strata, such as their composition, texture, and fossil content, scientists can make inferences about past environmental conditions and the evolution of life on Earth. Stratigraphy is an important tool for geologists and paleontologists to understand the geologic history of a region and the relationships between different rock formations.

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49.2 ml of a 0.524 m solution of hno3 is titrated with fe(oh)3. it takes 85 ml of fe(oh)3 to reach the equivalence point. what is the concentration (molarity) of the fe(oh)3? answer to 2 decimal places

Answers

The Fe(OH)₃ solution has a content of 0.304 M.

In this titration, HNO₃ is the acid and Fe(OH)₃ is the base. At the equivalence point, all the H+ ions from the HNO₃ react with all the OH- ions from the Fe(OH)₃ to form water and the salt, Fe(NO₃)₃. We can use the balanced chemical equation for the reaction to determine the stoichiometric ratio of HNO₃ to Fe(OH)₃ and calculate the molarity of Fe(OH)₃.

The balanced chemical equation for the reaction is:

HNO₃ + 3Fe(OH)₃ → Fe(NO₃)₃ + 3H₂O

From the equation, we see that 1 mole of HNO₃ reacts with 3 moles of Fe(OH)₃. Therefore, the number of moles of HNO₃ in the solution can be calculated as:

moles of HNO₃ = Molarity of HNO₃ x Volume of HNO₃ solution in liters

moles of HNO₃ = 0.524 M x (49.2 mL / 1000 mL/L)

moles of HNO₃ = 0.0258 mol

At the equivalence point, the number of moles of Fe(OH)₃ added is equal to the number of moles of HNO₃ in the solution. Therefore, we can calculate the molarity of Fe(OH)₃ as:

Molarity of Fe(OH)₃ = moles of Fe(OH)₃ added / Volume of Fe(OH)₃ solution in liters

Since the volume of the Fe(OH)₃ solution added is 85 mL, or 0.085 L, we can calculate the moles of Fe(OH)₃ as:

moles of Fe(OH)₃ = moles of HNO₃ = 0.0258 mol

Therefore, the molarity of Fe(OH)₃ is

Molarity of Fe(OH)₃ = 0.0258 mol / 0.085 L

Molarity of Fe(OH)₃ = 0.304 M

Thus, the concentration (molarity) of the Fe(OH)₃ solution is 0.304 M, rounded to two decimal places.

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Synthesis of tetracyclone lab report discussion questions
1. this aldol condensation was ran in ethanol, however all starting materials are also soluble in acetone. suggest why acetone wouldn't be an appropriate solvent for this reaction. 2. if you were to take an nmr of your product, in what region(s) of the spectrum (ppm range) would you see peaks? 3. if you were to take an ftir spectrum of your product, what main peak(s) would you observe? 4. the rate of this reaction is mostly held back by the poor solubility of koh in ethanol, which leads to slow deprotonation of the dibenzylketone. suggest a possible improvement that would allow for a faster rate of reaction.

Answers

Acetone is a polar aprotic solvent, meaning it cannot effectively solvate charged species like the hydroxide ion in KOH. Since the aldol condensation reaction involves deprotonation by hydroxide ion, using acetone as a solvent could slow down the reaction rate or even prevent it from occurring.

Ethanol is a better solvent for this reaction because it can solvate both the hydroxide ion and the organic starting materials. In the NMR spectrum of the product, peaks would be observed in the region of 0-2 ppm for the methyl protons, around 2-2.5 ppm for the methylene protons adjacent to the carbonyl group, and around 7-8 ppm for the aromatic.

In the FTIR spectrum of the product, a main peak at around 1700-1750 cm-1 would be observed, corresponding to the carbonyl stretching vibration. Other peaks related to C-H bending and stretching vibrations could also be observed in the region of 2800-3000 cm-1.

One possible improvement to increase the rate of reaction would be to use a more polar solvent, such as DMF or DMSO, which can better solvate KOH and promote faster deprotonation of the dibenzylketone.

Another possible improvement would be to increase the temperature of the reaction, which can also speed up the rate of deprotonation and subsequent aldol condensation.

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some advantages of using photoredox dyes compared to transition metal catalysts include (select all that apply):

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Some advantages of using photoredox dyes compared to transition metal catalysts include increased selectivity, cost-effectiveness, broad substrate scope, and enhanced reaction efficiency.

Selectivity refers to the ability to promote a single desired reaction and minimize unwanted side reactions. Photoredox dyes tend to have higher selectivity than transition metal catalysts, meaning they are more effective at promoting the desired reaction while reducing the formation of byproducts.

Cost-effectiveness is an important factor when it comes to chemical reactions. Photoredox dyes tend to be cheaper than transition metal catalysts, making them more appealing for those on a budget.

The broad substrate scope of photoredox dyes allows for the reaction of a wide variety of compounds, whereas transition metal catalysts are usually limited to certain types of substrates.

Finally, photoredox dyes often have enhanced reaction efficiency compared to transition metal catalysts. This means they can carry out the same reaction faster and with a higher yield.

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which is the best colored indicator to use in the titration of 0.1 m ch3cooh(aq) with naoh(aq)? why? look up ka values in the appendix. indicator pka bromocresol green 4.8 bromothymol blue 6.8 phenolphthalein 9.2 group of answer choices